Headlight issues

[Stickysteve44]

Thanks for all the help guys

 

[Stickysteve44]

Gotta find someone with a working xs in Va willing to test my regulator I guess

 

[Team Junk]

You can test the diodes on the rectifier. With the regulator unplugged check for resistance from each yellow or white to ground. Reverse the probes and measure again. You should have infinite reading one way and near 0 the other way.

 

[Stickysteve44]

Infinite on all one way. 0.360, 0.367, and 0.338 the other way. That bad?

 

[Jim]

Better is a rewind from @Jim if he has some ready.

I do have one ready to ship. Have a look here.

 

[Jim]

Infinite on all one way. 0.360, 0.367, and 0.338 the other way. That bad?

Here's a video I did on how to test the rectifier.

 

[Team Junk]

Infinite on all one way. 0.360, 0.367, and 0.338 the other way. That bad?

That's a good result.

 

[gggGary]

There's a total of 12 diode tests cuz there's 6 diodes and each needs to be tested against forward and backward current.
This tests only the diodes the "set point" can only be tested in a operating system 14.2 volts plus or minus .5 volt is normal.

 

[5twins]

Looks to me like 12 tests, 2 on each of the 6 diodes.

 

[Stickysteve44]

I do have one ready to ship. Have a look here.

I'll take it!

 

[Jim]

I'll take it!

I'll send you a PM.

 

[gggGary]

Looks to me like 12 tests, 2 on each of the 6 diodes.

I wuz changing my reply as you typed this.

 

[Team Junk]

I was just going by memory. Been a couple of years since I last did it.

 

[Stickysteve44]

Just ordered a new rotor from Jim. Thank goodness this lighting problem had me looking at the charging system. If not I'd probably be out stuck somewhere far from home right now. Hopefully it fixes my headlight. Will keep yall posted. If not, any xs gurus in RVA willing to meetup?

 

[Stickysteve44]

Checked my rotor again. I'm getting an infinity reading between rings? 0.L Wut?

 

[5twins]

I don't think you can test them with the brushes in place, completing the circuit. Also, are the slip rings dirty? If real dirty, you can get some funky readings. If they are, take your readings from the clean outer edges.

 

[Stickysteve44]

I pulled the brushes for the test. And I cleaned the rings.

 

[gggGary]

If you have kept running the bike between tests ( and I kinda think you have) the rotor tends to keep getting more and more shorts till something overheats and breaks. (the winding wire) or a solder connection on the backside of the slip ring plate.
Kind of a caution, and I've trod a similar path myself a "time or two":
Systems often die of "cascade failure" One component fails, increasing the load on surrounding components till they fail, at some point the whole system collapses, often with disastrous, or if you are lucky just expensive, results. Most collapsed bridges followed this path!
Many an XS650 charging system failure started with an easily replaceable bad battery. But dogged determination to ignore a problem left a hefty repair bill and mebbie some towing charges as the final result.
I'll guess at least half of my cheap barn buy XS650's started the trip to the back of the shed with someone trying to band-aid a dead battery. Crashes and dirty carbs make up most of the balance...

 

[Stickysteve44]

The only time I've started it was to move it to the back yard as they're repaving my street. Other than that. Hasn't been ridden. I'm well aware of the cascade of failures it can cause. Don't want to risk it. I'm going to replace the battery when I get the new rotor put on. This one is supposedly a year old. I've charged it on a trickle charger and seems to be holding a charge.

But either way. I really haven't been running it.

 

[Stickysteve44]

Rotor swapped. Headlights come on. What should I check now?